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Datasheet BD9610AMUV PDF ( 特性, スペック, ピン接続図 )

部品番号 BD9610AMUV
部品説明 60V Synchronous Step-down Switching Regulator
メーカ Rohm
ロゴ Rohm ロゴ 
プレビュー
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BD9610AMUV Datasheet, BD9610AMUV PDF,ピン配置, 機能
High Performance Switching Regulator Series
60V Synchronous Step-down
Switching Regulator(Controller type)
BD9610AMUV
General Description
The BD9610AMUV is a family of high resistance and
wide-input voltage (10V to 56V), synchronous,
step-down switching regulator. BD9610AMUV offers
design flexibility with a variety of user-programmable
functions, including soft-start, operating frequency,
high-side current limit, and loop compensation.
BD9610AMUV uses the pulse-width modulation
method of the voltage mode, and drives 2 external
Nch-FETs. The externally programmable current limit
provides pulse-by-pulse current limit, as well as
hiccup mode operation utilizing an internal fault
counter for longer duration overloads.BD9610AMUV
is safe for pre-biased outputs, not turning on the
synchronous rectifier until the high-side FET has
already started switching
Features
High Resistance and Wide Range Input
Voltage :VCC=10V~56V
Internal Outside FET Gate Driver:REG10=10V
0.8V±1.0% Reference Voltage Accuracy
Safe for Pre-biased Outputs
Adjustable Oscillating Frequency and Soft-Start
Master/Slave Synchronize Function
Over Current Protection (OCP)
Under Voltage Locked Output(UVLO)
Thermal Shut-down(TSD)
Key Specifications
Input Supply Voltage
Output Voltage
Reference Voltage Accuracy
Gate Drive Voltage(REG10)
Frequency
10~56 [V]
1.0~(Vin×0.8) [V]
±1.0 [%]
9~11 [V]
50~500 [kHz]
Package
VQFN020V4040
4.00 ㎜×4.00 ㎜×1.00
Applications
Amusement machines
FA Equipments
OA Equipments
LED Lighting Equipments
General Equipments used 24V,48V Bus line
Typical Application Circuit
Vo
140kΩ
10kΩ
FB
1kΩ 11kΩ
180pF 4700pF
INV
SS
0.01μF
REG5
0.1μF
RTSS
0.01μF
RT
75kΩ
SYNC
CLKOUT
ON/OFF 1μF
CTL
VCC
CLH
CLL
RCL
20kΩ
BST
10μF×4
5mΩ
VIN
VIN
=15-56V
HG
BD9610AMUV
0.47μF
LX
REG10
Nch
SUD23N06-31L
(Vishay Siliconix)
Vo
10μF×4
VOUT
=12V
5μH
(DCR=3mΩ)
220μF
LG
1μF
Nch
SUD23N06-31L
(Vishay Siliconix)
A Type of Efficiency
η=95%
(Vin=34V,Io=10A,fosc=250kHz)
100
90
80
70
60 Vin=34V,Vo=12V
50
0 5 10 15
Iout [A]
GND
PGND
STRUCURESilicon Monolithic Integrated Circuit Not designed to withstand radiation.
www.rohm.com
© 2011 ROHM Co., Ltd. All rights reserved.
TSZ2211114001
1/27
TSZ02201-0Q1Q0AJ00010-1-2
24.OCT.2014 Rev.002

1 Page



BD9610AMUV pdf, ピン配列
BD9610AMUV
Block Functional Description
1. 5VREG
5V Regulator supplied voltage for Internal Circuits(5V±2%).
It is available as external supply voltage for current ability (2mA Max) or less.
2. ERROR AMP
Error amplifier output PWM control signal after detected output signal.
Internal reference voltage is 0.8V(accuracy±1%).
Connect capacitor and resistor between inverting pin (INV) and output pin (FB) as phase compensation elements.
3. Soft Start
A Circuit that does Soft Start to the Output Voltage of DCDC Comparator, and prevents Rush Current during
start-up. The external capacitor of SS pin is charged with the internal source current (1uA), and That slope inputs to
the error amplifier as the reference voltage of the start-up.
4. OSC
This is a oscillator for the reference of the PWM modulation. The frequency of the internal triangle wave is
programmed by RRT which connected to RT within 50kHz to 500kHz. RT pin is the output of the buffer
of RTSS voltage. CLKOUT is the output of the internal oscillator as the square wave.
Also this can be synchronized to an external clock through the SYNC pin.
5. PWMCOMP
This is a comparator for PWM modulation comparing the output of error amplifier and ramp wave
to decide switching duty. Switching duty is limited by HG min OFF time(350ns),
because of charging of BST-LX capacitor.
6. DRV
It drives the external FETs. Particularly, high side DRV is built in UVLO.
7. 10VREG
10V Regulator supplied voltage for low-side driver and charged capacitor between BST and LX through
internal switch.
8. UVLO
This is a Low Voltage Error Prevention Circuit.
This prevents internal circuit error during increase of Power supply Voltage and during decline of Power supply
voltage. It monitors VCC, REG5 and REG10. This operation turns off both external FET and reset soft-start
by detecting the monitoring voltage under each threshold.
9. TSD
This is a heat protect (Thermal Shut Down) circuit.
When it detects an abnormal temperature exceeding Maximum Junction Temperature (Tj=150), it turns off
both external FET. It has with Hysteresis and automatically releases by becoming under the threshold temperature.
10. OCP
This is a Over Current Protection circuit. It uses a two-tier approach. The first tier is a pulse-by-pulse protection
scheme. Current limit is implemented on the high-side FET by sensing the CLH-CLL voltage when the gate is driven
high. The CLH-CLL voltage is compared to the threshold voltage programmed by RCL resister. If the CLH-CLL
voltage exceeds the threshold, the switching pulse is immediately terminated. The FET remains off until the next
switching cycle is initiated. The second consists of a fault counter. The fault counter is incremented on
an over-current pulse. When the counter reaches two within three pulse, both FETs, FB and SS are tuned off
during the definite time. After the time both FET, FB and SS are released, and automatically re-start with soft-start.
11. CTL
With the voltage applied to CTL, IC ONOFF can be controlled.
When a voltage of 2.8V or more is applied, it turns ON, at open or 0V application, it turns OFF.
About 300kΩ pull-down resistance is contained within the pin.
www.rohm.com
© 2011 ROHM Co., Ltd. All rights reserved.
TSZ2211114001
3/27
TSZ02201-0Q1Q0AJ00010-1-2
24.OCT.2014 Rev.002


3Pages


BD9610AMUV 電子部品, 半導体
BD9610AMUV
Electrical Characteristics
(Unless otherwise specified, Ta=25,VCC=CTL=24V,RT=200kΩ)
PARAMETER
CURRENT LIMIT
SYMBOL
MIN
LIMIT
TYP
OCP threshold voltage
VOCPTH
160
200
OCP propagation delay to output
OCP counts to hiccup
TOCP
NOCP
-
-
200
2
OCP shut-down hold cycles
THICCUP
REGULATOR
REG10 output voltage
VREG10
REG5 output voltage
VREG5
REG5 current ability
SYNCHRONIZE OSCILLATOR
IREG5
SYNC input current
ISYNC
SYNC input voltage H
VSYNCH
SYNC input voltage L
VSYNCL
CLKOUT output range
VCLKOUT
CLKOUT sink current
ICLKSI
CLKOUT source current
WHOLE DEVICE
ICLKSO
CTL input current
ICTL
CTL input voltage H
VCTLH
CTL input voltage L
VCTLL
Stand-by current
ISC
Quiescent current
ICC
-
9
4.9
10
-
2.8
GND
REG5-0.5
1.5
1.5
-
2.8
GND
-
1.5
32768
10
5.0
30
8
-
-
REG5
3
3
5
-
-
0
3
MAX
UNIT
CONDITION
240
mV
Between CLH and CLL
(RCL=7.5kΩ)
300 ns
-
counts
series or
every other cycles
-
cycles
T=1/FOSC,
Hold time=T×THICCUP
11 V
5.1 V
- mA V=VREG50.95
16
5.0
0.3
REG5+0.5
-
-
uA SYNC=5V
V
V
V
mA CLKOUT=0.5V
mA CLKOUT=4.5V
10
VCC
0.3
5.0
4.5
μA CTL=5V
V
V
μA CTL=0V
mA INV=5V
www.rohm.com
© 2011 ROHM Co., Ltd. All rights reserved.
TSZ2211114001
6/27
TSZ02201-0Q1Q0AJ00010-1-2
24.OCT.2014 Rev.002

6 Page





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